The US Army's
armored brigade combat team (ABCT) is built around the new combined arms
battalion (CAB), of which it originally had two and now has
three. The CAB has a headquarters
company, two mechanized infantry companies and two armored
companies. The CABs are affiliated with
either armor, cavalry or infantry regiments. The battalion's
organization color and the guidon of its headquarters company
reflect the regimental identity, while the other companies have
branch-oriented guidons. Companies of cavalry-affiliated CABs
all use Cavalry branch guidons. The headquarters company and companies
A and B of the brigade engineer battalion (BEB) use an Engineer branch guidon;
companies C and D use Signal and Military Intelligence branch
guidons respectively. The
headquarters company and forward support companies of the
brigade support battalion (BSB) have buff guidons with scarlet
letters and numerals but no branch insignia; the other three
companies have branch-oriented guidons. The headquarters company
of the brigade uses a guidon of the standard pattern for
brigades of divisions.

As reorganized in
2014-15 the 2nd Armored
Brigade Combat Team ("Strike Hard") of the 1st Armored
Division has two armor-affiliated CABs and one
infantry-affiliated CAB, as shown by the HQ company guidons below.
Note that the 4-27 FA has only four battery elements. Instead of
the traditional organization (HQ battery, three firing
batteries, service battery) FA battalions are now configured
with an HQ battery and three firing batteries only. Each battery has
six howitzers for a battalion total
of eighteen guns. The functions of the service battery have been
assumed by the forward support company of the BSB dedicated to
the FA battalion (Company F). Cavalry units organized as CABs
use the titles "battalion" and "company," while those organized
as reconnaissance, surveillance and target acquisition (RSTA) units use the titles "squadron" and "troop."

In 2016 a further
reorganization reduced the CABs to three maneuver companies
each. Armor-affiliated CABs now have two armor companies and one
mechanized infantry company; Infantry-affiliated CABs have two
mechanized infantry companies and one armor company. The
redundant armor company was reflagged to the 1-1 Cavalry as
Troop D.